589
FNCA52 TJSJ 020730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST SUN AUG 2 2026
DISCUSSION
INFLUX OF MOISTURE DURING THE WEEKEND COULD AID IN IMPROVING
OVERALL FIRE WEATHER CONDITIONS. HOWEVER, CRITICALLY DRY FUELS
PERSIST ACROSS SOUTHERN PUERTO RICO AND ST. CROIX, WITH KEETCH-
BYRAM DROUGHT INDEX (KBDI) VALUES REMAINING WELL ABOVE THE
CRITICAL THRESHOLD. EAST TO EAST-SOUTHEAST WINDS ARE EXPECTED TO
REMAIN ABOVE OR NEAR THE THRESHOLD VALUES, SLIGHTLY WHICH COULD
PROMOTE THE RAPID SPREAD OF ANY FIRE THAT DEVELOPS. RESIDENTS AND
VISITORS SHOULD AVOID OUTDOOR BURNING AND EXERCISE CAUTION WITH
ACTIVITIES THAT COULD GENERATE SPARKS OR OPEN FLAMES, ESPECIALLY
ACROSS AREAS WITH CRITICALLY DRY VEGETATION.
PRZ014-022000-
SOUTHEAST COASTAL PLAINS-
330 AM AST SUN AUG 2 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 20
TEMP (24H TREND) 89 (-2) 74 (-2) 92
RH % (24H TREND) 61 (+1) 94 (+1) 53
WIND 20FT/EARLY(MPH) E 14 E 12 E 14
WIND 20FT/LATE(MPH) E 16 NE 12 E 17
MIXING HGT(FT-AGL/MSL)4640 5020
TRANSPORT WND (MPH) E 16 E 18
VENT RATE (KT-FT) 64960 80320
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-022000-
SOUTHERN HILLS-
330 AM AST SUN AUG 2 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 20
TEMP (24H TREND) 87 (+1) 70 (-3) 89
RH % (24H TREND) 67 (+3) 99 (+3) 59
WIND 20FT/EARLY(MPH) E 12 E 11 E 12
WIND 20FT/LATE(MPH) SE 12 E 12 E 13
MIXING HGT(FT-AGL/MSL)5080 5530
TRANSPORT WND (MPH) E 16 E 16
VENT RATE (KT-FT) 71120 77420
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-022000-
NORTH COASTAL PLAINS-
330 AM AST SUN AUG 2 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 40 20
TEMP (24H TREND) 91 (+1) 73 (-3) 91
RH % (24H TREND) 63 (-1) 100 (+3) 60
WIND 20FT/EARLY(MPH) E 14 E 14 E 12
WIND 20FT/LATE(MPH) E 18 E 11 E 21
MIXING HGT(FT-AGL/MSL)4630 5180
TRANSPORT WND (MPH) E 15 E 18
VENT RATE (KT-FT) 60190 82880
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-022000-
NORTHERN HILLS-
330 AM AST SUN AUG 2 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 70 40 40
TEMP (24H TREND) 88 (-1) 71 (-2) 90
RH % (24H TREND) 69 (+4) 100 (0) 63
WIND 20FT/EARLY(MPH) E 12 E 12 E 11
WIND 20FT/LATE(MPH) E 14 E 8 E 19
MIXING HGT(FT-AGL/MSL)4810 6350
TRANSPORT WND (MPH) E 14 E 15
VENT RATE (KT-FT) 57720 82550
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-022000-
WEST COAST-
330 AM AST SUN AUG 2 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 50 20 40
TEMP (24H TREND) 92 (0) 72 (-2) 94
RH % (24H TREND) 63 (+1) 100 (+2) 59
WIND 20FT/EARLY(MPH) E 14 E 14 E 13
WIND 20FT/LATE(MPH) E 14 E 9 E 14
MIXING HGT(FT-AGL/MSL)4370 4880
TRANSPORT WND (MPH) E 15 E 14
VENT RATE (KT-FT) 56810 58560
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-022000-
EASTERN INTERIOR-
330 AM AST SUN AUG 2 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 30
TEMP (24H TREND) 88 (0) 72 (-3) 90
RH % (24H TREND) 64 (+1) 100 (+2) 58
WIND 20FT/EARLY(MPH) SE 14 E 13 E 12
WIND 20FT/LATE(MPH) E 13 E 13 E 14
MIXING HGT(FT-AGL/MSL)5430 6190
TRANSPORT WND (MPH) SE 16 E 17
VENT RATE (KT-FT) 76020 92850
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-022000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST SUN AUG 2 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 50 30
TEMP (24H TREND) 85 (+3) 70 (-2) 86
RH % (24H TREND) 70 (-3) 100 (+1) 66
WIND 20FT/EARLY(MPH) SE 12 E 10 E 11
WIND 20FT/LATE(MPH) E 12 E 10 E 13
MIXING HGT(FT-AGL/MSL)3670 4580
TRANSPORT WND (MPH) SE 17 E 18
VENT RATE (KT-FT) 55050 73280
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-022000-
CENTRAL MOUNTAIN RANGE-
330 AM AST SUN AUG 2 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 60 30 40
TEMP (24H TREND) 85 (+1) 68 (-3) 87
RH % (24H TREND) 74 (+4) 100 (+1) 66
WIND 20FT/EARLY(MPH) SE 10 E 8 E 10
WIND 20FT/LATE(MPH) SE 10 E 6 E 11
MIXING HGT(FT-AGL/MSL)5070 7290
TRANSPORT WND (MPH) SE 13 E 10
VENT RATE (KT-FT) 55770 65610
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-022000-
CAYEY MOUNTAIN RANGE-
330 AM AST SUN AUG 2 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 30
TEMP (24H TREND) 83 (0) 70 (-2) 85
RH % (24H TREND) 73 (+4) 100 (0) 66
WIND 20FT/EARLY(MPH) SE 11 E 9 E 11
WIND 20FT/LATE(MPH) E 11 E 10 E 12
MIXING HGT(FT-AGL/MSL)4430 5200
TRANSPORT WND (MPH) E 16 E 18
VENT RATE (KT-FT) 62020 83200
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-022000-
VIEQUES-
330 AM AST SUN AUG 2 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 50 30
TEMP (24H TREND) 90 (+1) 78 (0) 90
RH % (24H TREND) 57 (-3) 87 (-3) 57
WIND 20FT/EARLY(MPH) E 16 G23 E 17 E 16
WIND 20FT/LATE(MPH) E 16 E 17 E 16
MIXING HGT(FT-AGL/MSL)3140 3540
TRANSPORT WND (MPH) E 21 E 20
VENT RATE (KT-FT) 56520 60180
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-022000-
CULEBRA-
330 AM AST SUN AUG 2 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 50 30
TEMP (24H TREND) 91 (+2) 78 (-1) 92
RH % (24H TREND) 58 (-9) 90 (+1) 59
WIND 20FT/EARLY(MPH) E 17 E 17 E 14
WIND 20FT/LATE(MPH) E 16 E 17 E 16
MIXING HGT(FT-AGL/MSL)3200 3520
TRANSPORT WND (MPH) E 22 E 20
VENT RATE (KT-FT) 60800 59840
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-022000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST SUN AUG 2 2026
TODAY TONIGHT MON
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 30
TEMP (24H TREND) 92 (+1) 74 (-2) 93
RH % (24H TREND) 59 (+1) 96 (+4) 55
WIND 20FT/EARLY(MPH) E 18 G25 E 19 E 19
WIND 20FT/LATE(MPH) SE 19 G26 E 16 SE 20
MIXING HGT(FT-AGL/MSL)4660 4970
TRANSPORT WND (MPH) SE 20 E 21
VENT RATE (KT-FT) 79220 89460
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-022000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST SUN AUG 2 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 40 20
TEMP (24H TREND) 89 (+2) 77 (-2) 89
RH % (24H TREND) 60 (-6) 90 (+1) 60
WIND 20FT/EARLY(MPH) E 16 E 18 E 17
WIND 20FT/LATE(MPH) E 16 E 17 E 16
MIXING HGT(FT-AGL/MSL)3220 3390
TRANSPORT WND (MPH) E 20 E 18
VENT RATE (KT-FT) 54740 54240
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-022000-
ST CROIX-
330 AM AST SUN AUG 2 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 10
TEMP (24H TREND) 90 (+2) 78 (0) 90
RH % (24H TREND) 62 (-5) 92 (-1) 61
WIND 20FT/EARLY(MPH) E 14 E 17 E 16
WIND 20FT/LATE(MPH) E 16 E 17 E 14
MIXING HGT(FT-AGL/MSL)4620 4770
TRANSPORT WND (MPH) E 21 E 21
VENT RATE (KT-FT) 83160 85860
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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